<template>
  <div class="permission-container">
    <div class="app-container">
      <!-- 表格 -->
      <el-card>
        <div style="text-align: right; margin-bottom: 20px">
          <el-button type="primary" size="small" @click="hAdd(1,'0')">添加权限</el-button>
        </div>
        <el-table border :data="list" row-key="id">
          <el-table-column label="名称" prop="name" />
          <el-table-column label="标识" prop="code" />
          <el-table-column label="描述" prop="description" />
          <el-table-column label="操作">
            <template slot-scope="scope">
              <el-button v-if="scope.row.type===1" type="text" @click="hAdd(2,scope.row.id)">添加</el-button>
              <el-button type="text" @click="hEdit(scope.row.id)">编辑</el-button>
              <el-button type="text" @click="hDel(scope.row.id)">删除</el-button>
            </template>
          </el-table-column>
        </el-table>
      </el-card>
    </div>
    <el-dialog
      :close-on-click-modal="false"
      :close-on-press-escape="false"
      :visible.sync="showDialog"
      :title=" isEdit ? '编辑'+'-'+ formData.name : '添加'"
      @close="resetForm"
    >
      <!-- 表单内容 -->
      <el-form
        ref="form"
        label-width="100px"
        :model="formData"
        :rules="rules"
      >
        <el-form-item label="权限名称" prop="name">
          <el-input v-model="formData.name" />
        </el-form-item>
        <el-form-item label="权限标识" prop="code">
          <el-input v-model="formData.code" />
        </el-form-item>
        <el-form-item label="权限描述" prop="description">
          <el-input v-model="formData.description" />
        </el-form-item>
        <el-form-item label="权限启用">
          <el-switch
            v-model="formData.enVisible"
            active-text="启用"
            active-value="1"
            inactive-text="不启用"
            inactive-value="0"
          />
        </el-form-item>
      </el-form>

      <template #footer>
        <div style="text-align: right;">
          <el-button @click="showDialog = false">取消</el-button>
          <el-button type="primary" @click="hSubmit">确定</el-button>
        </div>
      </template>
    </el-dialog>
  </div>
</template>
<script>
import { getPermissionList, addPermission, delPermission, updatePermission, getPermissionDetail } from '@/api/permission'
import { tranListToTreeData } from '@/utils'
export default {
  name: 'Permission',
  data() {
    const validName = (rule, value, callback) => {
      let existedNameList = this.list.filter(item => item.id === this.id).map(item => item.name)
      if (this.isEdit) {
        const dept = this.list.find(item => item.id)
        existedNameList = this.list.filter(item => item.pid === dept.pid && item.id !== this.id).map(item => item.name)
      }
      existedNameList.includes(value) ? callback(`权限名字${value} 已被占用`) : callback()
    }
    const validCode = (rule, value, callback) => {
      let existedCodeList = this.list.map(item => item.code)
      if (this.isEdit) {
        existedCodeList = this.list.filter(item => item.type !== this.type).map(item => item.code)
      }
      console.log('被占用的code列表', existedCodeList)
      existedCodeList.includes(value) ? callback(`权限标识${value}已被占用`) : callback()
    }
    return {
      isEdit: false,
      list: [],
      showDialog: false, // 是否显示弹层
      formData: {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      },
      rules: {
        name: [
          { required: true, message: '权限名称不能为空', trigger: 'blur' },
          { min: 1, max: 50, message: '权限名称要求1-50个字符', trigger: 'blur' }, {
            validator: validName, trigger: 'blur'
          }
        ],
        code: [
          { required: true, message: '权限标识不能为空', trigger: 'blur' },
          { min: 1, max: 50, message: '权限编码要求1-50个字符', trigger: 'blur' },
          {
            validator: validCode, trigger: 'blur'
          }
        ]
      }
    }
  },
  created() {
    this.loadPermissionList()
  },
  methods: {
    async loadPermissionList() {
      const res = await getPermissionList()
      this.list = tranListToTreeData(res.data)
    },
    hAdd(type, id) {
      this.showDialog = true
      // 记录当前添加的关键信息
      this.formData.type = type
      this.formData.pid = id
      this.isEdit = false
    },
    async doAdd() {
      try {
        // 调用接口
        await addPermission(this.formData)
        // 关闭弹层
        this.showDialog = false
        //  重新发请求
        this.loadPermissionList()
        this.$message.success('添加成功')
      } catch (err) {
        this.$message.error(err)
      }
    },
    async hEdit(id) {
      this.isEdit = true
      // 根据id去获取详情
      const res = await getPermissionDetail(id)
      // 填充在表单中
      this.formData = res.data
      // 显示弹层
      this.showDialog = true
    },
    async doEdit() {
      try {
        // 调用接口
        await updatePermission(this.formData)
        // 关闭弹层
        this.showDialog = false
        //  重新发请求
        this.loadPermissionList()
        this.$message.success('修改成功')
      } catch (err) {
        this.$message.error(err)
      }
    },
    hSubmit() {
      this.$refs.form.validate(valid => {
        if (valid) {
          // 做添加 或者 编辑
          this.isEdit ? this.doEdit() : this.doAdd()
        }
      })
    },
    resetForm() {
      // 重置表单
      this.formData = {
        name: '', // 名称
        code: '', // 权限标识
        description: '', // 描述
        enVisible: '0', // 开启
        pid: '', // 添加到哪个节点下
        type: '' // 类型
      }
      // 清空校验
      this.$refs.form.resetFields()
    },
    async doDel(id) {
      // 删除
      await delPermission(id)
      // 更新表格数据
      this.loadPermissionList()
    },
    // 删除
    hDel(id) {
      this.$confirm('你确定要删除么').then(() => {
        this.doDel(id)
      }).catch(err => {
        console.log(err)
      })
    }
  }
}
</script>
